Moving to Idaho as a master plumber: every state's rule

Idaho has no master plumber title. The level above journeyman is the Plumbing Contractor certificate of competency, which Idaho Code 54-2611 defines as a person ('any person, or a member, representative or agent of a firm') who has passed the contractor examination; the contractor application confirms 'a plumbing contractor may be licensed as an individual', so it is treated here as the master-equivalent credential. IDAPA 24.39.20.100.03 requires the applicant to hold an active Idaho Plumbing Journeyman certificate, pass the Board-designated contractor exam (60% business and law, 40% code and sizing, 75% to pass), and file a $2,000 compliance bond; the initial certificate fee is $147 for a three-year term. A contractor may represent only one business at a time. No out-of-state contractor or master license is reciprocated at this level: the form has no reciprocal application type and the Montana, Oregon and Washington agreements cover journeymen only.